Refer back to the queries in Section 2.6. Suppose the combined
listing of weather records and city location is of particular
interest to your application, but you do not want to type the
query each time you need it. You can create a view over the query, which gives a name to the
query that you can refer to like an ordinary table.

Making liberal use of views is a key aspect of good SQL
database design. Views allow you to encapsulate the details of
the structure of your tables, which may change as your
application evolves, behind consistent interfaces.

Views can be used in almost any place a real table can be
used. Building views upon other views is not uncommon.